Oil-well-plunger attachment and sucker-rod connection



oct. 11,1927. 1,645,428-

, c. c. `Mosh/ IER ET AL OVIL 'NELL PLUNGER ATTACHMENT AND SUCKR ROD CONNEGTI-ON y Filed Jan. 15, 1924 Patented Oct. 11, 1927.

UNITED STATES PATENT OFFICE.

CHESTER C. HOSMEB, OF HUNTINGTON BEACH, AND SAMUEL E. FUBMAN, OF LONG' BEACH, CALIFORNIA'.

OIL-WELIa-PL'UNGER ATTACHMENT AND SUCKER-ROD CONNECTION.

Appueanon med January 15, 1924. serial No. 4686,402.

Our invention relates generally tool joints and more particularly to a device that may be advantageously used as a connection r coupling between the sections or stands of oil well pump sucker rods or between the lower end of the sucker rod line and an oil well pump plunger.

Among the principal objectsof our invention are, the provision of a relatively simple, practical and easily produced joint structure that will aiord a quick acting, posltive and substantial coupling or connection between the adjacent ends of two members, such as oil well sucker rods, or a rod section and a pump plunger and, to provide a coupling or joint structure that will be eiective in saving much that is involved in the screwing together and unscrewing of the joints ordinarily used between sucker rods and the like.

A further object of our invention is the provision of a joint or connection that will enable the plunger of an oil well pump to be inserted with the pump barrel, when the well 95 is tubed and the sucker rod connected to said plunger afterwards, and which procedure entirely eliminates the scratching, marl-ing and cutting of the surface of the plunger that invariably results where said plunger is low- 80 ered through the well tubing into the barrel at the lower end thereof.

With, the foregoing and other objects in view, our invention Iconsists in certain novel features of construction and arrangementl of 85 parts that will be hereinafter more fully described and claimed and illustrated in the accompanying drawings in which Figure 1 is a perspective view of a joint or connection of our improved construction.

line 2-2 of Fig. 1.

Figure 3 is a vertical section taken on the line 3-3 of Fig. 2.

Figure 4 is a pers ective view of a spring-v pressed latch or loc 'ng pin.

.Fi ure 5 is a perspective view of the lower mem er of the joint and which is engaged by the locking pin.

Figure 6 is a vertical sectional view through the upper portion of a pump barrel and showing our improved device in use as a connection between the sucker rod and the pump plun er.

Figure 7 1s a vertical section taken through of the time and labor4 Figure 2 is a vertical section taken on the v lie center of a modified form of the connecion.

Figure 8 is a horizontal section taken on the line 8-8 of Fig. 7.

Figure 9 is a horizontal section taken on the line 9-9 of Fig. 2.

Referring by numerals to the accompanying drawings, 10 designates the upper member of our lmproved connection, said member being in the form of a short cylindrical body, in the upper end of which is formed athreaded recess 11 that is adapted to receive the threaded end of a sucker rod or similar member, such as 12.v

Formed in the lower portion of member 10 1s a cylindrical recess 13, within which is located a pa1r of oppositely disposed, inwardly projectlng lugs 1 4 having at their upper ends, horizontally disposed shoulders 15.

Extending Jfrom recess 13 upwardly through the central portion of body 10 is an axial bore 16 in which is arrangedfor sliding movement, a lockingpin or bolt 17 and l0- cated inthe upper portion of said bore 16 is a compression spring 18 that bears on top of said bolt.

The .downward movement of the locking bolt within thev bore 16 is limited by 'a kev 19 that is seated in a diametrically arranged aperture 20 in said bolt and the end portions of which key occupy vertically disposed slots 21 that are formed in member 10 to the sides of bore 16.

Key 19 may be secured to bolt 17 in any sultable manner, preferably by indenting the side of the bolt and pressing a small portion of the metal thereof into a recess 22 that 1s formed inthe side face of said key (see Fig.

Formed in the side faces of the bolt 17 are vertically disposed drain grooves 23 and formed through said bolt above the key ,ap-

erture 20 is an aperture 24 that is adapted to receive a pin or tool such as 25 when the bolt is lifted in disconnectingthe parts of the joint or connection.

Formed on the lower end of bolt 17 is a diametrically disposed rib 26 that is adapted to enter a recess 27, which latter is formed in the upper end of a stem or shank 28 that projects upward from the lower member 29 ofthe joint or connection.

Thisfmember 29 is in the form of a short cylinder, in the lower end of Awhich is 'formed a threaded recess 30 that is adapted to receive the threaded end of a sucker rod or the like.

Formed on the upper portion of shank 28 are oppositely arranged lugs 31 that are adapted to enter the recess 13 and rest directly on the shoulders 15 of lugs 14. When ,the parts of the joint are being connected or coupled together bythe engagement of the lugs 31 on top oflugs 14 and the parts are locked against relative rotary movementby the engagement of lug 26 in the recess 27.

To enable the parts ofthe joint to be dis'- connected, a pin or rod, such as 2,5, is inserted through aperture 24, so that locking bolt.

17 may be raised or retracted a sufficient distance to withdraw lug 26 from recess 27, thus permitting one part of the connection to be rotated to a position where the lugs 31 can be drawn downward between lugs 14.

In Fig. 6 our improved joint or coupling is shown as a connection between the lower end of the string of sucker rods and the pump plunger.

Where the device is thus used, the lower member 29 is screwed onto the stem that projectsV from the top cage 32, that is arranged at the upper end of the plunger 33 and the parts thus assembled are arranged within the working barrel 34, before the latter is placed .in the well. Thus the surface of the plunger' is prevented from being cut, scratched or dented while being placed in the well and when the suckerrod is lowered into the tubing, the upper portion 10 of the joint member that is secured to the lower end of said rod, may be readily connected to the joint member in the manner heretofore described. l

In the modified construction illustrated in Figs. 7 and 8, the lockingbolt 17, instead of being provided with the key 19 nas formed on its outer Surface, vert1call disposed ribs 35, that are arranged for s iding movement 'in grooves 36,- 1n the upper member 10a of 'the'joint It will be noted that the shoulders or contacting faces between the adjacent c nds of the two members of the joint or coupling are tapered or made conical. This is done in order that they parts may be readily centered when belng connected and, further,

the contacting faces being inclined, will shed dirt, dust, scale and the ll.ke and, as a result, said faces and the joint between same will remain comparatively clean.

In some instances, it may be found desirable to provide the joint with two or more pairs of the interchanging lugs 14 and 31.

Thus it will-be seen that we have produced a tool joint or coupling that may be" rod connection and pump plunger attachment may be made and substituted for those herein described without departing from the spirit of the invention, the scope .of which is set forth in the appended claims.

We `claim as our invention:

1. In a connection for sucker rods or the like, a vpair of joint members, one of which is axially recessed to receive an axially disposed projecting portion of the other member, the interengaging portionsof said mem- Y bers being the inner ject-ing portion being provided with a nonprovided with interlocking parts 'circular recess, and an axially disposed member carried by the ,other spring-pressed joint member and provided with a non-circular projecting end that is adapted to engage in said non-circular recess for locking the joint members against relative rotary movement when properly connected.

v2. In a connection for sucker rods or the like, a pair of members, one ,of which is provided with an' axially disposed recess in which is formed a air of oppositely arranged lugs, an axia y disposed shank projecting from the other member and adapted to enter said recess as the members are moved endwise toward each other, a. pair of oppositely arranged lugs on' said shank,

which last mentioned lugs are adapted to shank being provided with a non-circular recess and a .sprin -held member axially arranged within. t e opposite joint member and provided on its end with a non-circular lug that is adapted to enter the non-circular recess in the end of the shank for locking the two joint members against relative rotary movement whensproperly connected.

3. In a connection for sucker rods or the like, a pair of members, an axially arranged shank projecting from one of said members and adapted to enter an axially arranged re- .cess in the other member the end of which shank is provided with a non-circular recess, interlockmg lugs on the en gm portions of said members and longitu inallj7 movable means axially arranged Within' the me. member and provided on its outer end with end of said axially disposed pro! engage the lugs in the recess the end of said a non-circular lu lthat is 'adapted to engage is formed a pair of oppositely arranged lugs, a shank projecting from the other joint member and adapted to enter said recess as the members are moved endwise toward each other, a pair of oppositely arranged lugs on said shank, which lugs are adapted to engage the lugs within the recess when the joint members are assembled and one member is rotated a quarter turn, the end of said shank being provided with a non-circular recess, a spring-held member axially disposed within the opposite joint member and provided on its outer end with a non-circular lug that is' ada ted to enter the non-circular aperture in t. e end of the shank to lock the joint members against relative rotary movement, a key passing through said axially disposed spring-held locking member and the joint member within which the spring-held oeking member is arranged being slotted lengthwise for the accommodation of the projecting endsA of said key.

5. In a coupling -oi the class described,

vprojecting ends of said key leld locking memberbein yprovide with a pair of members one of which is provided1 l with an axially disposed recess within which is formed a air of oppositely arranged lugs, a shank projecting from the other joint member and adapted to enter said recess as the members are moved endwise toward each other, a pair of oppositely arranged lugs on said shank, which lugs are adapted to engage the lugsV Within the recess when the joint members are assembled and one member is rotated a quarter turn, the end of said shank being provided with 'a non-circular recess, a spring-held memberv axially disposed within the opposite joint member and provided on its outer end with a noncircular lug that is adaptedto enter the non-circular aperture in the end of the shank to lock the joint members againstrelative rotaryjmovement, a key passing through said axially disposed spring-held locking member, the joint member within whichthe spri lockingmember is arranged being s otted lengthwise for the accommodation of the an aperture that is adapte to receive a retractmg tool.

In testimony whereof. we aiix our signatures. CHESTER C. HOSMER.

SAMUEL E. FURMAN.

l-held and said s ring- 

